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By Design

Votes

1

Found in

2017.4.1f1

Issue ID

1040418

Regression

No

NavMesh.SamplePosition calculates position between nearest points incorrectly

AI Navigation

-

How to reproduce:
1. Open given Unity project
2. Enter "BugScene" scene
3. Notice 3 green lines in the scene menu
4. Try to move "WRONG!!!_NavMeshSamplePosition_Checker"
5. Notice that line is connecting randomly

Expected result: According to the documentation, NavMesh.SamplePosition() finds the closest point
Actual result: Lines are connected randomly

Reproducible with: 2018.3.0a1, 2018.2.0b4, 2018.1.2f1, 2017.4.4f1, 2017.3.2f1, 2017.2.2p2, 2017.1.4f1

  1. Resolution Note (2021.1.X):

    SamplePosition() is by design looking for a position on the NavMesh by first projecting the point up or down, and only when that does not return any result will the method search for other positions nearby. This behaviour is useful for some queries that need to inspect the NavMesh in a 2D plane.
    The documentation will be updated to reflect this behaviour.

Comments (1)

  1. michaelday008

    Oct 04, 2019 10:50

    I've added my feedback and photo about this bug here:

    https://forum.unity.com/threads/navmesh-sampleposition-not-always-returning-closest-point-to-sampled-position.332798/

    My post: https://forum.unity.com/posts/5030135/edit

    As you can see from the photo and forum post, it's returning a point 2 meters away downward rather than a point 0.1 meters away sideways like it should.

    2019.1.10f1

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